Abdominal strengthening apparatus

ABSTRACT

An abdominal strengthening apparatus is provided. The apparatus comprises at least one handlebar grip, a handlebar pole coupled to the at least one handlebar grip, the handlebar pole comprising a base, wherein the base is configured to engage a first hook, a main unit body comprising a second hook and an open track channel; and an extension resistance system coupled to the first hook and the second hook. The handlebar pole is configured for a downward movement within the main unit body along the open track channel, in response to a force exerted by a user through the at least one handlebar grip. The extension resistance system is configured to facilitate an upward movement of the handlebar pole in response to release of the force exerted by the user.

CROSS-REFERENCE TO RELATED APPLICATION(S)

The present application claims the benefit of US Provisional PatentApplication No. U.S. 62/922,737 filed on 26 Aug. 2019. The saidapplication is hereby incorporated by reference herein.

FIELD OF THE INVENTION

The present invention relates generally to a power crunch abdominalstrengthening apparatus. More specifically, the present inventionrelates to an apparatus which allows the user to perform a plurality ofabdominal exercises in multiple body positions, such as sitting, kneesfloor and standing position using different resistance tension level tostrengthen the upper and lower abdominal muscle group as well as theoblique muscles using a sophisticated resistance mechanism to performseries of crunch exercises to isolate the abdominal muscle group.

BACKGROUND OF THE INVENTION

Fitness exercise is an important aspect of maintaining a person'sgeneral health. Fitness exercise promotes confidence and provides energyto a person, as well as, tones, strengthen muscles and developing astronger body. While a majority of exercises may be performed withoutthe aid of equipment, exercise equipment assists in prompting properform for performing the exercises. Proper form allows a user to gain themost from the exercises, as performing the fitness exercise routine withproper form engages all of the targeted muscles group for the exercise.Thus, the person is able to maximize the potential of their exerciseworkout training program.

It is widely believed that core strength, abdominal and oblique muscles,is one of the most important muscle groups to strengthen. Having goodcore strength helps to prevent injuries, protects inner organs and thecentral nervous system, assuages back pains, promotes good posture andmobility, and gives a sense of confidence to a person.

Accordingly, there is a need for a device which provides for variousforms of abdominal and oblique muscle group strengthening.

SUMMARY OF THE INVENTION

The present invention is an abdominal strengthening apparatus tostrengthen the core of the user. The present invention allows a user toperform sitting, knees, standing and floor crunches workout. The presentinvention provides resistance to the abdominal crunching motion in orderto maximize the strengthening potential for exercising the user's coremuscles and stronger lower back.

According to one embodiment of the present invention, an abdominalstrengthening apparatus is provided. The apparatus comprises at leastone handlebar grip, a handlebar pole coupled to the at least onehandlebar grip, the handlebar pole comprising a base, wherein the baseis configured to engage a first hook, a main unit body comprising asecond hook and at least one open track channel; and an extensionresistance system coupled to the first hook and the second hook. Thehandlebar pole is configured for a downward movement within the mainunit body along the at least one open track channel, in response to aforce exerted by a user through the at least one handlebar grip. Theextension resistance system is configured to facilitate an upwardmovement of the handlebar pole in response to release of the forceexerted by the user.

Further, the second hook is stationary, and may be attached to a top endof the main unit body. Also, the second hook and the first hook arealigned with the at least one open track channel.

Furthermore, the handlebar pole is configured to be moved downwardswithin the main unit body along the at least one open track channel froma first position of the first hook to a second position of the firsthook, in response to the force exerted by the user through the at leastone handlebar grip. The handlebar pole is further configured to push theat least one extension resistance system along the at least one opentrack channel. Further, the second position of the first hook may befarther away from a fixed position of the second hook as compared to thefirst position of the first hook. The upward movement corresponds to amovement of the first hook from the second position to the firstposition.

Additionally, the extension resistance system is configured tofacilitate the upward movement of the handlebar pole using a tensionbuilt in the extension resistance system during the downward movement ofthe handlebar pole.

Moreover, the main unit body further comprises a brass male bush sleeveat a top end of the main unit body. The brass male bush sleeve isconfigured to guide movement of the handlebar pole in and out of themain unit body. The handlebar pole is a hollow tubular structure. Also,the main unit body further comprises the first hook, and wherein thefirst hook is configured to be moved along the at least one open trackchannel.

Still further, the extension resistance system may comprise one of aspring, a resistance band, at least one rubber band, and an elastic ringband. The extension resistance system is detachable, and is configuredto be replaced with another extension resistance system. Also, thehandlebar pole is configured to be telescopic inside the main unit bodyafter detaching of the extension resistance system.

Also, the main unit body comprises one of a pivoting rubber knob, arubber cap, or a swivel tilting rubber feet mounted at the base of themain unit body, and is configured to rotate the main unit body. The oneof the pivoting rubber knob or a rubber cap is configured to be rotatedduring one or more oblique abdominal exercises performed by the userusing the abdominal strengthening apparatus.

The abdominal strengthening apparatus may further comprise a handle gripassembly, wherein the handle grip assembly comprising the at least onehandlebar grip and a neck. The neck is configured to be mounted insidethe handlebar pole, and wherein the neck comprises a series of holes foraccommodating one of a pin and a screw to be inserted for heightadjustment of the abdominal strengthening apparatus.

The main unit body is configured to be pivot right and left, therebyfacilitating performance of one or more oblique exercises by the userusing the abdominal strengthening apparatus.

Further, the first hook is attached to the base of the handlebar pole tomove along with the handlebar pole during the downward movement and theupward movement along the at least one open track channel of the mainunit body.

BRIEF DESCRIPTION OF THE DRAWINGS

Some embodiments of the present invention are illustrated as an exampleand are not limited by the figures or measurements of the accompanyingdrawings, in which like references may indicate similar elements and inwhich:

FIGS. 1A and 1B illustrate an abdominal strengthening apparatus inunfolded and folded positions respectively, in accordance with thevarious embodiments of the present invention.

FIGS. 2A and 2B illustrate front detailed view of an apparatus forabdominal strengthening apparatus, in accordance with the variousembodiments of the present invention.

FIG. 3 illustrates side view of an apparatus for abdominal strengtheningapparatus, in accordance with the various embodiments of the presentinvention.

FIGS. 4A and 4B illustrate front detailed view of various components ofthe abdominal strengthening apparatus, in accordance with the variousembodiments of the present invention.

FIGS. 5A and 5B illustrate a detailed view of a handlebar pole of theabdominal strengthening apparatus, in accordance with the variousembodiments of the present invention.

FIGS. 6A, 6B, and 6C illustrate exemplary extension resistance systemsfor the abdominal strengthening apparatus, in accordance with thevarious embodiments of the present invention.

FIG. 7 illustrates detailed view of a second hook and extensionresistance system of an apparatus for abdominal strengthening apparatus,in accordance with the various embodiments of the present invention.

FIG. 8 illustrates detailed view of a pivoting rubber knob or a rubbercap of an apparatus for abdominal strengthening apparatus, in accordancewith the various embodiments of the present invention.

DETAILED DESCRIPTION OF DRAWINGS

The present invention will now be described by referencing the appendedfigures representing preferred embodiments.

With reference now to the drawing figures, several exemplary aspects ofthe present invention are described. The word “exemplary” is used hereinto mean “serving as an example, instance, or illustration.” Any aspectdescribed herein as “exemplary” is not necessarily to be construed aspreferred or advantageous over other aspects.

FIGS. 1A and 1B illustrate an abdominal strengthening apparatus 100, inaccordance with the various embodiments of the present invention.According to various embodiments described herein, the abdominalstrengthening apparatus 100 is a handheld or portable device for fitnesspurposes.

While FIG. 1A illustrates the abdominal strengthening apparatus in anunfolded position, FIG. 1B illustrates the abdominal strengtheningapparatus in a folded position. The apparatus 100 comprises a main unitbody 102, handlebar pole 104, hooks 106 a and 106 b, handle gripassembly (not shown in FIGS. 1A and 1B) comprising at least handle grips108 a and 108 b, and an extension resistance system 110.

The main unit body 102 is a hollow cylindrical structure, enclosed by anouter wall, a top end, and a lower end. The top end comprises a brassmale bush sleeve 112 attached thereto, which comprises a hole forguiding the handlebar pole 104 into and out of the main unit body 102 ina smooth manner. In one embodiment of the present invention, the brassmale bush sleeve 112 may be 10 mm in width.

The outer wall surrounds the main unit body 102 on its circumference ofthe longitudinal end. In some embodiments of the present invention, theouter wall may surround the main unit body 102 at its lower end as well.The outer wall of the main unit body 102 comprises an open track channel112 (not clearly shown in FIGS. 1A and 1B). The main unit body 102(i.e., the outer wall) may be made up of a rigid and strong material,such as, but not limited to, Polyvinyl Chloride (PVC), plastic, metal,carbon fiber, aluminum, etc. Further, the main unit body 102 may be madein different shapes, such as, but not limited to, tubular, oval,elliptical, square, and rectangular hollow shape. According to apreferred embodiment of the present invention, the main unit body 102 istubular in shape. The main unit body 102 is configured to receive thehandlebar pole 104 through the brass male bush sleeve 112.

The abdominal strengthening apparatus 100 further comprises hooks 106 aand 106 b. After the abdominal strengthening apparatus 100 is assembledas shown in FIGS. 1A and 1B, the hook 106 b is located above the hook106 a. Further, the hook 106 a is engaged to a base of the handlebarpole 104 and is movable along the narrow open track channel 114. On theother hand, the hook 106 b is fixed/stationary on the main unit body102. The hook 106 b may be mounted to the top end of the main unit body102 above the open track channel 114. Also, the hook 106 b and itsassociated system is illustrated in conjunction with FIG. 7. Asdepicted, the hook 106 b may have a safety knob 126 for locking theextension resistance system 110, wherein the hook 106 b is mounted tothe brass male bush sleeve 112.

The open track channel 114 of the main unit body 102 is illustrated inconjunction with FIG. 4A. The open track channel 114 is a long emptychannel running in the outer wall and preferably centered parallel tothe main unit body 102. Further, the open track channel 114 isconfigured to facilitate a downward movement of the hook 106 a (or theengaged handlebar pole 104) from its first resting position depicted inFIG. 1A to the second position depicted in FIG. 1B. The downwardmovement is facilitated in response to a force exerted by a user throughthe handlebar grips 108 a and 108 b. During the downward movement of thehook 106 a, a simultaneous elongation of the extension resistance system110 (e.g., spring) would occur. Due to the elongation of the extensionresistance system 110, a tension or force is built into the extensionresistance system 110. Once the force exerted by the user is released,the built-in tension or force in the extension resistance system 110facilitates an upward movement of the hook 106 a, thereby moving thehook 106 a (and simultaneously moving the handlebar pole 104) back toits original position as shown in FIG. 1A. The two different positionsof the hook 106 a in FIGS. 1A and 1B during its movement may also bereferred to as unfolded/resting and folded positions, since thepositions correspond to the unfolded/resting and folded positions of theabdominal strengthening apparatus, respectively. The open track channel114 may extend through a limited portion of the main unit body 102facilitating downward and upward movement of the hook 106 a. Accordingto various embodiments of the present invention, the open track channel114 extends beginning from the unfolded/resting position of the hook 106a substantially till the lower end of the main unit body 102. Accordingto an exemplary embodiment of the present invention, the open trackchannel 114 may be 360 mm in length, while the total length of the mainunit body 102 may be 630 mm in length. This exemplary embodiment is alsoshown in FIGS. 2A and 2B with the lengths of the open track channel 114and the main unit body 102 depicted as L1 and L2 respectively. Accordingto an exemplary embodiment of the present invention, the open trackchannel 114 may be 7 mm in width.

The handlebar pole 104 is configured to be mounted to the brass malebush sleeve 112 at the top of the main unit body 102, as also shown inFIG. 5A. In accordance with an embodiment of the present invention, thehandlebar pole 104 may be a long hollow cylindrical tube coupled to thebrass male bush sleeve 112. While the abdominal strengthening apparatus100 may be readily disassembled, the handlebar pole 104 is placed withinthe main unit body 102 for operation of the abdominal strengtheningapparatus 100, as shown in FIG. 1A.

The handlebar pole 104 may further include a sliding knob 122. Thesliding knob 122 is configured to engage a pin or a screw in one hole ofa series of holes of the neck 120 (shown in FIG. 4B) of the handle gripassembly 118 to increase or decrease the height of the apparatus 100, asexplained hereinafter. The handlebar pole 104 in conjunction with thesliding knob 122 may be referred herein as a handlebar assembly. Thefirst hook 106 a is configured to be mounted at the bottom of the baseof the handlebar assembly As depicted in FIG. 5A, a mechanism 130 may beprovided for engaging the first hook 106 a. According to one exemplaryembodiment of the present invention, the mechanism 130 may be a hole atthe base of the handlebar pole 104 for engaging a pin or screw forcoupling the hook 106 a to the handlebar pole 104.

Further, as depicted in FIG. 5B, the mechanism may further include aguiding mechanism 132. The guiding mechanism, for example, may include aslider metal bar with one section of the bar inside the base of thehandlebar pole 104. As depicted in FIG. 5B, one section of the bartowards the base of the handlebar pole 104 may be comparativelydifferent in size than the section away from the base of the handlebarpole 104. The guiding mechanism 132 facilitates guidance of the base ofthe handlebar pole 104 against the interior wall of the main unit body102, during the downward movement of the hook 106 a and extensionresistance system from one end of the open track channel to the otherend. Further, the guiding mechanism 132 ensures straight line orparallel movement within the main unit body 102 along the open trackchannel during the downward and/or upward movement of the handlebarpole. Additionally, the guiding mechanism 132 facilitates attaching thefirst hook 106 a to the base of the handlebar pole, as depicted in FIG.5B.

During operation, the handlebar pole 104 is configured to be moved in anupward and a downward direction inside the main unit body 102 in acentered and parallel direction with the main unit body 102's open trackchannel 114. In some embodiments of the present invention, the handlebarpole 104 may include a sliding cap attached to the pushing pole base,which is configured to smoothly guide the pole base against the interiorof the main unit body 102. In turn, this keeps the first hook 106 a in astraight line with the open track channel 114.

During operation of the apparatus 100, the handlebar pole 104 isconfigured to be guided through the open track channel 114 of the mainunit body 102, when pushed by a user downwards towards the lower end ofthe main unit body 102. Further, according to another embodiment of thepresent invention, the abdominal strengthening apparatus 100 may beconfigured for downward movement of the handlebar pole 104 towards thelower end of the main unit body 102, while left and right directionturning of the handle grips 108 a and 108 b to target the obliquesmuscle group of the user. According to an exemplary embodiment of thepresent invention, the two handle grips 108 a and 108 b may have adistance of 300 mm, as shown as L5 in FIG. 2A.

Further, the main unit body 102 comprises a pivoting rubber knob or arubber cap 116 mounted at its base or the lower end. The pivoting rubberknob, a rubber cap 116, or a swivel tilting rubber feet allows theapparatus 100 to rotate during one or more oblique abdominal exercisesperformed by a user. The pivoting rubber knob or a rubber cap 116 isclearly depicted in FIG. 8. According to various embodiments of thepresent invention, the pivoting rubber knob or the rubber cap 116 isnon-sticky, such that the non-sticky rubber knob/cap prevents fromsliding the abdominal strengthening apparatus 100 on the ground surfaceduring its usage.

According to an embodiment of the present invention, the user pushes thehandlebar pole 104 downwards and pivoting at the same time to perform acrunch and twist abdominal and oblique exercises.

Furthermore, the apparatus 100 comprises a height adjustable handle gripassembly (not shown in FIGS. 1A and 1B). The handle grip assembly 118 isillustrated in conjunction with FIG. 4B. As illustrated, the handle gripassembly 118 comprises a neck 120 and two handle grips 108 a and 108 b.In some embodiments of the present invention, the handle grip assembly118 may comprise only one handle grip. Such an embodiment is notdiscussed in detail, since the usage of a single grip instead of twogrips is well known to one skilled in the fitness equipment domain. Theneck 120 comprises a series of holes with the neck 120 being configuredto be mounted inside the handlebar pole 104, with the purpose toincrease or decrease the height level of the apparatus 100 based on theheight of various users. Each of the series of holes are designed in amanner to accommodate a pin or a screw to be inserted via the slidingknob 122.

While FIGS. 1A and 1B both depict the handle grips 108 a and 108 b in aV-shape position, it may be apparent to one skilled in the art that thehandle grips 108 and 108 b may have a T-shape as well. The handle grips108 a and 108 b are mounted on to the handle grip assembly 118's tubeframe.

Furthermore, the abdominal strengthening apparatus 100 comprises anextension resistance system 110, which is explained in conjunction withFIGS. 6A, 6B, 6C, and 7. The extension resistance system 110 comprisestwo hooks 106 a and 106 b and a loop hook, such as, but not limited to,a spring, a resistance band, rubber bands, elastic ring bands, etc.attached between the first hook 106 a and the second hook 106 b tocreate the pushing force. A tension or force is built into the extensionresistance system 110 when the extension resistance system 110 is pusheddownwards in response to a force exerted by the user through the handlegrips 108 a and 108 b. Further, the extension resistance system 110(e.g., a spring 124 or 128, or a resistance band 126) is configured toassist the upward movement with the extension resistance system 110returning back to its normal position, i.e., the unfolded/restingposition of the first hook 106 a. Exemplary springs 124 and 128 to beused in the extension resistance system 110 are shown in FIGS. 6A and6C. Similarly, an exemplary resistance band 126 is shown in FIG. 6B.

As discussed above, the first hook 106 a is mounted to the pushinghandlebar pole 104's base, while the second hook 106 b is mounted to thetop end of the main unit body 102 in a stationary position. According tosome embodiments of the present invention, the second hook 106 b mayadditionally be attached to the brass male bush sleeve 112 for strongerattachment.

According to an exemplary embodiment of the present invention, thedistance between the hook 106 a and 106 b in the resting/unfoldedposition may be 200 mm, while the total length of the main unit body 102may be 630 mm in length. This exemplary embodiment is also shown inFIGS. 3 and 4A with the hooks' distance and the length of the main unitbody 102 depicted as L3 and L4 respectively.

In operation of the apparatus 100, the apparatus 100 is positioned in anupright position with the base against the ground surface. The user canperform the abdominal exercises in multiple body positions, such assitting position, standing position, and knees position. The user mustpush the handle grips 108 a and 108 b downward against the resistanceextension system 110 along the open track channel 114 with the handlebarpole 104 moving towards the lower end of the main unit body 102, whilethe first hook 106 a elongating/extending the extension resistanceextension system 110 from one end/unfolded position to the other/foldedposition end. The new position of hook 106 a, upon completion of thedownward movement along with open track channel 114, is farther awayfrom the position of the stationary hook 106 b as compared to initialposition of the hook 106 b before beginning of the downward movement. Inother words, the distance between the position of hook 106 b and thehook 106 a at the completion of downward movement of the hook 10 b ismore than such distance immediately before a start of the downwardmovement. When the first hook 106 a moves downward along the open trackchannel 114, it allows the handlebar pole 104 to stretch the extensionresistance system 110 in downward direction to create requisite forcefor the crunch abdominal exercises. The user can perform the crunchabdominal exercises by repeating the downward and upward crunch movementtill the abdominal muscle groups are fatigue.

The exercises may be performed with the arms of the user either in alocking position, i.e., closer to the upper body, or may be used withopen arms position to offer a harder core abdominal workout routine.When the user places both hands on the handle grips 108 a and 108 b, thehandlebar pole 104 is pushed inside the main unit and in a downwarddirection by pushing the extension resistance system 110 to create andgenerate a contraction force to engage the abdominal and core musclegroup. The main unit body 102 and the handlebar assembly 118 areconfigured to be pivot right and left in order to assist the user inperforming the obliques exercises, while engaging the contraction motionof the abs and core in multiple directions to target all the abs andcore muscle group.

The abdominal strengthening apparatus 100 is configured in a manner suchthat the extension resistance system 110 may be a configurable or adetachable system. Specifically, the user may be able to adjust theresistance tension by manually changing the extension springs and/or theextension elastic cords or the ring bands attached to the hooks 106 aand 106 b with a lighter or harder tension to increase or decrease thepushing force to the handlebar pole 104 during the abdominal crunchexercises. Once the desired resistance tension is selected, a safetynut/knob is additionally attached behind the hooks 106 a and 106 b toprevent from the extension resistance system 110 to exit from the hookduring the exercises. In view thereof, users can perform top quality aband core workout exercises in a quiet and smooth motion, andadditionally in a safe and comfortable position to maximize the qualityab and core workout to help achieve better results.

For fast and easy storage, the user may disconnect the extensionresistance system 110 from the hooks so the handlebar pole 104 cancollapse in a telescope position inside the main unit body 102. Further,the hollow empty section inside the pushing handlebar pole 104 may alsobe used for storage of the spring or band.

The previous description of the invention is provided to enable anyperson skilled in the art to make or use the invention. Variousmodifications to the invention will be readily apparent to those skilledin the art, and the generic principles defined herein may be applied toother variations. Thus, the invention is not intended to be limited tothe examples and designs described herein, but is to be accorded thewidest scope consistent with the principles and novel features disclosedherein.

What is claimed is:
 1. An abdominal strengthening apparatus, comprising:at least one handlebar grip; a handlebar pole coupled to the at leastone handlebar grip, the handlebar pole comprising a base, wherein thebase is configured to engage a first hook; a main unit body comprising asecond hook and at least one open track channel; and at least oneextension resistance system coupled to the first hook and the secondhook; wherein the handlebar pole is configured for a downward movementwithin the main unit body along the at least one open track channel, inresponse to a force exerted by a user through the at least one handlebargrip, and wherein the at least one extension resistance system isconfigured to facilitate an upward movement of the handlebar pole inresponse to release of the force exerted by the user.
 2. The abdominalstrengthening apparatus of claim 1, wherein the second hook is attachedto a top end of the main unit body.
 3. The abdominal strengtheningapparatus of claim 1, wherein the second hook and the first hook arealigned with the at least one open track channel.
 4. The abdominalstrengthening apparatus of claim 1, wherein the handlebar pole isconfigured to be moved downwards within the main unit body along the atleast one open track channel from a first position of the first hook toa second position of the first hook, in response to the force exerted bythe user through the at least one handlebar grip, and wherein thehandlebar pole is further configured to push the at least one extensionresistance system along the at least one open track channel.
 5. Theabdominal strengthening apparatus of claim 4, wherein the secondposition of the first hook is farther away from a fixed position of thesecond hook as compared to the first position of the first hook.
 6. Theabdominal strengthening apparatus of claim 4, wherein the upwardmovement corresponds to a movement of the first hook from the secondposition to the first position.
 7. The abdominal strengthening apparatusof claim 1, wherein the at least one extension resistance system isconfigured to facilitate the upward movement of the handlebar pole usinga tension built in the at least one extension resistance system duringthe downward movement of the handlebar pole.
 8. The abdominalstrengthening apparatus of claim 1, wherein the second hook isstationary.
 9. The abdominal strengthening apparatus of claim 1, whereinthe main unit body further comprises a brass male bush sleeve at a topend of the main unit body, and wherein the brass male bush sleeve isconfigured to guide movement of the handlebar pole in and out of themain unit body.
 10. The abdominal strengthening apparatus of claim 1,wherein the handlebar pole is a hollow tubular structure.
 11. Theabdominal strengthening apparatus of claim 1, wherein the at least oneextension resistance system comprises at least one of a spring, aresistance band, at least one rubber band, and an elastic ring band. 12.The abdominal strengthening apparatus of claim 11, wherein the extensionresistance system is detachable, and configured to be replaced withanother extension resistance system.
 13. The abdominal strengtheningapparatus of claim 1, wherein the main unit body comprises one of apivoting rubber knob, a rubber cap, or a swivel tilting rubber feetmounted at the base of the main unit body, and wherein the one of thepivoting rubber knob and the rubber cap is configured to rotate the mainunit body.
 14. The abdominal strengthening apparatus of claim 1, whereinthe one of the pivoting rubber knob or a rubber cap is configured to berotated during one or more oblique abdominal exercises performed by theuser using the abdominal strengthening apparatus.
 15. The abdominalstrengthening apparatus of claim 1 further comprising a handle gripassembly, wherein the handle grip assembly comprising the at least onehandlebar grip and a neck.
 16. The abdominal strengthening apparatus ofclaim 15, wherein the neck is configured to be mounted inside thehandlebar pole, and wherein the neck comprises a series of holes foraccommodating one of a pin and a screw to be inserted for heightadjustment of the abdominal strengthening apparatus.
 17. The abdominalstrengthening apparatus of claim 1, wherein the main unit body isconfigured to be pivot right and left, thereby facilitating performanceof one or more oblique exercises by the user using the abdominalstrengthening apparatus.
 18. The abdominal strengthening apparatus ofclaim 1, wherein the extension resistance system is detachable, andwherein the handlebar pole is configured to be telescopic inside themain unit body after detaching of the extension resistance system. 19.The abdominal strengthening apparatus of claim 1, wherein the main unitbody further comprises the first hook, and wherein the first hook isconfigured to be moved along the at least one open track channel. 20.The abdominal strengthening apparatus of claim 1, wherein the first hookis attached to the base of the handlebar pole to move along with thehandlebar pole during the downward movement and the upward movementalong the at least one open track channel of the main unit body.